Aug 2026· Journal of Molecular Graphics and Modelling· Vol 148, pp.
109539
· 0 citations· 46 references
Medicine
TL;DR
This research developed a promising lead molecule (HIT1) as a therapeutic approach for ER-positive breast cancer through pharmacophore model-based drug design of thiazine derivative targeting ERα via pharmacophore model-based drug design.
Abstract
Breast cancer (BC) is considered a highly prevalent cancer among women, with estrogen receptor alpha (ERα) playing a pivotal role in tumor growth and development. Even with existing medications such as tamoxifen, the rising resistance underscores the vital demand for novel ER-positive inhibitors. The present work focuses on identifying a thiazine derivative targeting ERα via pharmacophore model-based drug design. A ligand database of 62 bioactive thiazine derivatives in the MCF-7 cell line was generated and validated using the pharmacophore model (AHRRR_1). An additional 95,296 thiazine derivatives were downloaded and screened against the developed pharmacophore model. 10 HITs were identified via high-throughput virtual screening, standard precision, and extra precision molecular docking with the ERα protein (Protein Data Bank ID: 4XI3). Hence, HIT1 was selected as a potential lead candidate following analysis of the pharmacokinetic profile and binding free energies, as it meets the criteria and has a higher docking score than the reference drug tamoxifen. Beyond this, the stability and structural compactness of the HIT1 were confirmed by a 200 ns molecular dynamics simulation. Subsequently, a Density Functional Theory assessment highlighted the drug-likeness and reactivity of the HIT relative to tamoxifen. Collectively, this research developed a promising lead molecule (HIT1) as a therapeutic approach for ER-positive breast cancer.
C25, the pyrazolin derivative represents a novel multi-target ligand with potential applications as an anti-inflammatory, analgesic, and anti-neoplastic agent and highlights its promise as a lead scaffold for future drug development.
Mst Neha Islam Ema, A. Ashraful, K. Fatema et al.· Bangladesh Pharmaceutical Jo...· 0 citations
The pharmacophore-based screening and docking analysis identified eleven promising EGFR-binding compounds, of which eight demonstrated optimal ADMET characteristics and stable interactions within the active site during molecular dynamics simulations, suggesting their potential efficacy as EGFR inhibitors.
M. Moulay, M. Mahmoud, Reem M. Farsi et al.· Journal of King Saud Univers...· 0 citations
Molecular docking simulation of 3 molecules of N-(1H-benzo[d]imidazol-2-yl)-7-chloro-6-fluorobenzo[d]thiazol2-amine with the target receptor aromatase was carried out so as to evaluate their theoretical binding affinities. The
chemical structure of the molecules was accurately drawn using ChemDraw Ultra software, then optimized at density
functional theory (DFT) using Becke’s three-parameter Lee–Yang–Parr hybrid functional (B3LYP/6-311**)
basis set in a vacuum of Spartan 14 software. Subsequently, the docking operation was carried out using PyRx
virtual screening software. Three compounds were developed by fusion of a benzothiazole and benzimidazole
ring system targeting the treatment of breast cancer. The marketed drug Exemestane which is also an aromatase
inhibitor was used as a reference molecule for docking. The highest docking score from all three molecules was
-8.6 kcal/mol which is very near to the standard drug score -9.5 kcal/mol which suggests that the compound
exhibited favorable protein–ligand interactions, indicating its potential as a lead candidate for further
investigation. In-silico ADME and drug-likeness prediction of the molecules showed good pharmacokinetic
properties having high gastrointestinal absorption, orally bioavailable, and less toxic. The outcome of the present
research strengthens the relevance of these compounds as promising lead candidates for the treatment of breast
cancer which could help the medicinal chemists and pharmaceutical professionals in further designing and
synthesis of more potent drug candidates. Moreover, the research also encouraged the in vivo and in vitro
evaluation study for the proposed designed compounds to validate the computational findings.
Khyati Bhagdev, Chintankumar J. Tank· International Journal of Dru...· 0 citations